McMaster 9662K21 Compression Spring Stock, Pack of 5, Spring Steel, 36" Long, 0.438" OD, 0.342" ID G1352967 Type Giveaway Ring Type Split Type Giveaway Ring Type Split Material Steel Color Gray Finish Zinc Plated Features Group and Organize Keys for Quick Access Attachment Type Split Ring Application Key Identification Construction Zinc Product Type Split Key Ring Country of Origin USA (subject to change) Cylinder Material Steel Extinguisher Capacity 150 lb Extinguisher Class ABC UL Rating 10A:80B:C Valve Material Brass Extinguishing Agent Material Composition Halotron Extinguishing Agent Type Halotron Standards UL 2129 UL 711 Maximum Discharge Distance 45 ft Discharge Time 38 sec For Fire Type Fabrics Always be ready for the perfect fit Their open ends make cutting easier but prevent them from standing on their own